The new communication method for people with disabilities has been developed in the USA. Scientists were granted implants in the brain of a paralyzed patient and with the help of the algorithm for the first time decrypted neural signals related to the writing of individual letters. And then they were able to display them on the screen in real time. The print speed was 90 characters per minute — about the same speed, people at the age are gaining messages in smartphones.
When, as a result of injury or illness, a person loses the ability to walk, brain neurons retain the ability to go, use objects or talk. The team of scientists from Stanford University decoded neural activity associated with a speech, and found a way for patients with implants implant linted into the brain to control the movement of the cursor on the screen of thoughts. The paralyzed could cause the cursor on the symbol and click on it at a speed of 40 characters per minute,
However, then the scientist came to mind the idea to appeal to the writing skill. They were implanted into the brain volunteer — a 65-year-old man with a spinal injury, paralyzed below the neck — two tiny chips that control the movements of the hand and brushes. When he imagined, as the letters writes, the signals of neurons went to the brain, and the algorithm of machine learning recognized patterns.
The interface speed is explained by the fact that each letter causes a certain and well-distinguishable pattern of activity, which the algorithm is quite simple to recognize.
Development of scientists from Stanford will allow, after necessary revision, quickly enter text without using hands. In the future, they plan to experience the interface on patients, deprived of the ability to talk — for example, on patients with lateral amyotrophic sclerosis.
Researchers from the United Kingdom
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